Test and Inspection
FlexScan FS300
Quad OTDR
FlexScan FS300 is a quad OTDR (850/1300nm multi-mode + 1310/1550nm single-mode) for cost-effective out-of-service FTTH PON and point-to-point network installation verification and troubleshooting.





FS300: cost-effective and performance-packed.
Be ready for anything with this all-in-one solution.
The FlexScan FS300-325 includes an integrated red laser Visual Fault Locator (VFL) and is available with optional integrated optical light source (OLS), optical power meter (OPM) plus Bluetooth/wi-fi wireless communications.
FlexScan OTDRs enable both novice and expert technicians to troubleshoot optical networks quickly and reliably or fully characterise newly installed or repaired networks. Using FlexScan’s innovative SmartAuto mode, multiple OTDR scans quickly and accurately detect, locate, identify, and measure network components and faults. After applying industry-standard or user-set pass/fail criteria, the characterized network is displayed using FlexScan’s intuitive, icon-based LinkMap view.
Because the FS300 automates test setup, shortens test time and simplifies results interpretation it improves efficiency and reduces the cost of testing. Acquired results may be stored internally or externally. Internally stored results are easily accessed via USB, Bluetooth or wi-fi.
With optional connector inspection, integrated source, power meter and VFL, FlexScan offers an all-in-one solution, ensuring technicians have everything they need to locate and resolve optical network issues. Designed for field use, FlexScan is robust, rugged, lightweight, powerful and flexible.
Key Features
All-in-one test capability
The FlexScan FS300 includes an integrated VFL, power meter and light source. It can be easily paired to AFL’s award-winning FOCIS family of inspection scopes for single-fibre and/or MPO and OptiTip® multifibre inspection, ensuring technicians have everything they need to locate and resolve optical network issues.
Performance-packed
With SmartAuto automated multi-pulse acquisition, 37dB dynamic range and best-in-class dead zones, FlexScan Quad OTDRs test multi-mode and single-mode networks – including FTTH PONs and POLANs up to 1:64 split ratio – while still detecting and measuring events <2 meters apart.
Pocket-sized
The FlexScan FS300’s small form factor still delivers 12-hour battery operation plus a large, bright, indoor/outdoor, 5-inch 800x480 touchscreen display.
Multiple reporting options
Reports can be generated directly from the unit using print-to-PDF feature or files can be transferred wirelessly to the free FlexScan App or uploaded via USB for real-time reporting using the included Windows-compatible Test Results Manager software.

PON troubleshooting made easy
Dramatically reduces test time
In SmartAuto mode, the FS300 automatically analyses and tests the network using a variety of network-optimised settings to precisely locate, characterise and identify network events with one button push. Loss and reflectance are measured for connectors, splices, splitters and macro-bends. FlexScan even checks for live fibre and verifies OTDR launch quality before initiating a test.
Simplifies network troubleshooting
LinkMap® color-coded icons enable even novice users to easily and accurately troubleshoot optical networks. LinkMap clearly identifies fibre start, end, connectors, splices, PON splitters, and macro-bends. A LinkMap Summary provides end-to-end link length, loss and ORL. Loss and reflectance of detected events is compared to industry-standard or user-defined pass/fail thresholds and displayed with clear pass/fail indications. Users can instantly toggle between LinkMap and Trace views.
Multi-mode and single-mode plus PON testing in one OTDR
FlexScan Quad OTDRs are the ideal test tool for verifying and/or maintaining both single-mode and multi-mode networks. Unlike most Quad OTDRs, FS300 OTDRs test both point-to-point networks and FTTH PONs/Passive Optical LANs (POLANs).

Kit configurations
Basic kit
Includes selected FlexScan, wrist strap, soft carry case, Quick Reference Guide plus TRM 3.0 Basic Test Results Manager software. Soft case includes room for optional accessories such as connector cleaning supplies, fibre ring (launch cable) or FOCIS Flex connector inspection solution.
Plus kit
Adds a One-click cleaner, 150m fibre ring (launch cable) plus TRM 3.0 Advanced to a FlexScan Basic Kit.
Pro kit
Adds an auto-focusing FOCIS Flex Fibre Optic Connector Inspection System and user-selected adapter tips to Plus Kit.
FID-31R complete kit
Adds FID-31R optical fibre identifier to PRO Kit.
FID-30 complete kit
Adds FID-30R optical fibre identifier with power meter to PRO Kit.
Technical specification
FlexScan FS300
Quad OTDR
EMITTER TYPE [1]
Laser
SAFETY CLASS [2]
Class I
FIBRE TYPE
Multi-mode: compatible with OM1-OM5
Single-mode: compatible with all G.65x
WAVELENGTHS [3]
Multi-mode: 850/1300 ±20nm
Single-mode: 1310/1550 ±20nm; 1650 ±20nm (Penta OTDR only)
CONNECTOR TYPE
User-specified APC or UPC ferrule with interchangeable UCI adapters
DYNAMIC RANGE [4]
Multi-mode: ≥29/29dB at 850/1300nm
Single-mode: ≥37/36/37dB at 1310/1550/1650nm
EVENT DEAD ZONE [5]
Multi-mode: ≤0.8m at 850/1300nm typical
Single-mode: 0.8m at 1310/1550nm typical
ATTENUATION DEAD ZONE [6]
Multi-mode: ≤3.0m
Single-mode: ≤3.5m
PON DEAD ZONE [7]
Multi-mode: Not applicable
Single-mode: ≤20m
PULSE WIDTHS
Multi-mode: 3, 5, 10, 20, 30, 50, 100, 200, 300, 500ns; 1μs
Single-mode: 3, 5, 10, 20, 30, 50, 100, 200, 300, 500ns; 1, 2, 3, 5, 10, 20μs
RANGE SETTINGS
Multi-mode: 250m to 30km
Single-mode: 250m to 240km
DATA POINTS
Up to 300,000
DATA SPACING
≤5cm to ≤8m
GROUP INDEX OF REFRACTION
1.3000 to 1.7000
DISTANCE UNCERTAINTY
±(1 + 0.0025% x distance + data point spacing) m
LINEARITY
±0.03dB/dB
LOSS RESOLUTION
0.001dB
REFLECTANCE RANGE
Multi-mode: 850: -20 to -58dB; 1300: -20 to -63dB
Single-mode: 1310: -20 to -65dB; 1550: -20 to -65dB
REFLECTANCE RESOLUTION
0.01dB
REFLECTANCE ACCURACY
±2dB
ORL RANGE
20 to 60dB
ORL RESOLUTION
0.01dB
ORL ACCURACY
±2dB over range 30 to 55dB; ±4dB over range 20-30dB and 55-60dB
TRACE FILE FORMAT
.SOR, Telcordia SR-4731 Issue 2
OTDR RESULTS
Storage Internal or external USB memory
INTERNAL STORAGE
Minimum 4GB internal non-volatile memory (App SW + > 1000 traces)
INTERNAL LAUNCH FIBRE
≥30m internal MM launch fibre
OTDR MODES
Supports SmartAuto, Expert, Real-Time for PON & point-to-point networks
REAL-TIME REFRESH RATE
1 to 4Hz
LIVE FIBRE PROTECTION
No OTDR damage when connected to live fibre delivering ≤ +3dBm at wavelength(s) in range 825 to 1675nm
LIVE FIBRE DETECTION
Reports live fibre with input signal ≥ -35dBm for wavelength(s) in range 825 to 1675nm
NOTES
[1] All specifications valid at 25°C unless otherwise specified. [2] FDA 21 CFR 1040.10 & 1040.11, IEC 60825-1: 2014. [3] Measured with laser in CW mode at 23°C ±3°C. [4] SNR=1, longest range and pulse width, 3-minute averaging. [5] Maximum distance between two points 1.5dB down each side of a reflective peak caused by an event with a -45dB (or smaller) reflectance. Test pulse width is 3 or 5ns. [6] Maximum distance from the start of a trace spike caused by an event with a -45dB (or smaller) reflectance, to the point where the trace returns to and stays within ±0.5dB of backscatter. Test pulse width is 3 or 5ns. [7] Recovery to within 0.5dB of backscatter after 1:16 splitter (≤13dB loss) using 100ns pulse width.